一閃[issen] flash
閃かす[hiramekasu] to brandish
閃き[hirameki] flair
閃く[hirameku] to flash (lightning, etc.)
閃光[senkou] flash

閃光電球[senkoudenkyuu] flash bulb
花崗閃緑岩[kakousenryokugan] granodiorite
紫電一閃[shidenissen] flash of lightning
電光一閃[denkouissen] flash of lightning
閃緑岩[senryokugan] diorite (a type of rock similar to granite)

舌鮃[shitabirame] sole (esp. the tonguefishes of family Cynoglossidae, but also the true soles of family Soleidae)
大鮃[ohyou] halibut (esp. the Pacific halibut, Hippoglossus stenolepis)

赤舌鮃[akashitabirame] Cynoglossus joyneri (species of cyprinid)